/*******************************************************************************
 * Copyright 2017 Bstek
 *
 * Licensed under the Apache License, Version 2.0 (the "License"); you may not
 * use this file except in compliance with the License.  You may obtain a copy
 * of the License at
 *
 *   http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
 * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.  See the
 * License for the specific language governing permissions and limitations under
 * the License.
 ******************************************************************************/
package com.bstek.urule.builder.resource;

import com.bstek.urule.RuleException;
import org.apache.commons.io.IOUtils;
import org.springframework.beans.BeansException;
import org.springframework.context.ApplicationContext;
import org.springframework.context.ApplicationContextAware;

import java.io.IOException;
import java.io.InputStream;

/**
 * @author Jacky.gao
 * @since 2014年12月22日
 */
public class FileResourceProvider implements ResourceProvider, ApplicationContextAware {
    private ApplicationContext applicationContext;

    @Override
    public Resource provide(String path, String version) {
        try {
            InputStream inputStream = applicationContext.getResource(path).getInputStream();
            String content = IOUtils.toString(inputStream, "utf-8");
            IOUtils.closeQuietly(inputStream);
            return new Resource(content, path);
        } catch (IOException e) {
            throw new RuleException(e);
        }
    }

    public boolean support(String path) {
        return path.startsWith("classpath:") || path.startsWith("file:") || path.startsWith("WEB-INF/");
    }

    public void setApplicationContext(ApplicationContext applicationContext) throws BeansException {
        this.applicationContext = applicationContext;
    }
}
